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THE PICTURE DOES NOT
APPEAR (1)
Is CD3809 connected?
Yes
Is there signal at
IC3901?
No
Is CP3904, CP3905
connected?
Yes
Is there signal at
IC4400?
Yes
Is CP3904, CP3905
connected and is there
signal?
Yes
Change SCALER PCB.
TROUBLESHOOTING GUIDE
No
Yes
No
No
No
E-2
Connect CD3809.
Change IC3901.
Connect CP3904, CP3905.
Check IC4400 and
peripheral circuit.
Connect CP3904, CP3905.
Caeck IC4400 and peripheral
circuit.
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